Home / 758,938.60-1,138,407.90-285,730.12

Finding the Fourth Proportional to 758,938.60, 1,138,407.90 and 285,730.12

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Solution

The fourth proportional to 758,938.60, 1,138,407.90 and 285,730.12 is: 428,595.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,938.60 : 1,138,407.90 = 285,730.12 : x
  2. Step 2: Convert to fraction form
    758,938.60/1,138,407.90 = 285,730.12/x
  3. Step 3: Cross multiply
    758,938.60x = 1,138,407.90 × 285,730.12
  4. Step 4: Simplify right side
    758,938.60x = 325,277,425,875.95
  5. Step 5: Solve for x
    x = 325,277,425,875.95/758,938.60
  6. Step 6: Final answer
    x = 428,595.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.